| Pillaiyarpatti | |
| Settlement Type: | Village |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Tamil Nadu, India |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Type3: | Taluk |
| Leader Title: | Panchayat President |
| Unit Pref: | Metric |
| Population Total: | 6309 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
Pillaiyarpatti is a village in the Thanjavur taluk of the Thanjavur district in the Indian state of Tamil Nadu.
As per the 2011 census, Pillaiyarpatti had a population of 4,856 with 2,299 males and 2,557 females. The sex ratio was 892 and the literacy rate was 83.57%.[1]